{"id":"DCD-10001510160","sku":"DCD-10001510160","display_title":"Square Tube Sleeve Adapter","title":"Sleeve Adapter Flanged Hollow Square Tube Sleeve Insert Black for DIY Enthusiasts","description":"Material: Crafted from black, this lightweight sleeve adapter offers a sturdy yet low-weight answer for connecting different square tubing sizes with long performance.\nDesign: Featuring a hollow rectangular construction with a flanged, longitudinal exterior grooves, and a side opening, this hollow sleeve adapter is engineered for a secure, Fit between tubes.\nFunction: Designed to connect 30 mm square tube into a size 38 mm square tube, this square tube adapter enables smooth size transition and reliable adjustment for various structural setups.\nSpecifications: Measuring approximately 134 mm long, 35.3 mm wide, and 45 mm high with a 30.8 mm square opening, 29 mm side opening, and 5 mm flange thickness, this tube adapter delivers dimensions for consistent fitting.\nApplication: Ideal for indoor fitness-equipment adjustment and tube projects, this adapter is a practical component for DIY frame builds, equipment repairs, and custom tubing modifications.\n\nWhether you are adjusting a piece of home gym equipment or building a personalized build from square tubing, having the right connecting component makes all the difference. This black sleeve adapter is engineered to provide reliable performance with a lightweight construction that holds up to regular indoor use. Its body resists everyday wear while keeping the overall weight low, so it adds minimal bulk to your tubing assembly. The thoughtful design details set this hollow sleeve adapter apart. Its rectangular shape fits neatly inside larger tubing, while the flanged creates a clean, finished edge that the adapter from sliding too far into the outer tube. Longitudinal exterior grooves help improve grip and stability once installed, and the side opening adds flexibility for alignment and access during assembly. At connector, this square tube adapter serves a clear purpose: it lets you fit a 30 mm square tube securely into a size 38 mm square tube. This size-bridging function makes adjustments smoother and more stable, eliminating wobble and creating solid connection between mismatched tubing sizes. Dimensions ensure a consistent, predictable fit every time. With an overall length of about 134 mm, a width of 35.3 mm, and a height of 45 mm, this tube adapter is compact enough to of of the way while still providing ample surface surface for a. The 30.8 mm square opening accommodates the inner tube, the 29 mm side opening supports alignment and fastener access, and the 5 mm thick flange provides a sturdy stopping edge. Weighing only about 28 g per piece, it is easy to keep spares on hand without adding extra weight to DIY Toolkit.for indoor fitness-equipment adjustments tube repairs, and a wide range of DIY frame projects, this adapter is a versatile addition to any hobbyist or DIY enthusiast's toolkit. Whether you are modifying a squat rack, building a storage frame, or repairing existing structures, it helps you achieve a, more stable fit with minimal effort.\n\nOption: Black","category":{"slug":"more","label":"More from the workshop","google_path":"Home & Garden > Household Supplies"},"product_category":"Home & Garden > Household Supplies","brand":"SuntekStore","condition":"new","price":"16.89 USD","price_amount":"16.89","currency":"USD","price_valid_until":"2026-10-31","tax":"US sales tax calculated at checkout (prices exclude tax)","availability":"in_stock","inventory_quantity":20,"max_quantity_per_order":10,"shipping":"US:ALL:Standard Shipping:12-22:0.00 USD","delivery_days":{"min":12,"max":22,"unit":"calendar_days_from_order","handling_business_days_max":4},"estimated_delivery":{"if_ordered_on":"2026-10-01","earliest":"2026-10-13","latest":"2026-10-23"},"ships_to":["US"],"shipping_cost":"0.00 USD","return_window_days":30,"return_policy":{"window_days":30,"window_starts":"delivery","condition":"unused, in original packaging","return_shipping_paid_by":"customer (we pay if the item is damaged, defective or not as described)","refund_method":"original payment method","refund_within_business_days_of_receipt":5,"how":"https://suntekstore.com/contact/ with the order number","url":"https://suntekstore.com/returns/"},"package_dimensions_cm":[17.5,9.5,11.0],"weight_g":30.0,"material":"Plastic","package_includes":"Hollow Sleeve ×1","product_dimensions_cm":[13.4,3.53,4.5],"specifications":[{"feature":"Material"},{"name":"Color","value":"Black"},{"name":"Structure","value":"Hollow sleeve adapter"},{"name":"Design","value":"Rectangular tubular construction with flanged rim, longitudinal exterior grooves, and side opening"},{"name":"Intended use","value":"Indoor fitness-equipment adjustment and tube applications"}],"image_link":"https://suntekstore-img.sfo3.digitaloceanspaces.com/p/58/584b59953377f9530f04b2cc8f02a5e294178652.jpg","additional_image_link":["https://suntekstore-img.sfo3.digitaloceanspaces.com/p/34/3420283803792dabb61f59e9c6a8208fbe8995e5.jpg","https://suntekstore-img.sfo3.digitaloceanspaces.com/p/3e/3ec571666f118dca60be19756e70fdfc27746564.jpg","https://suntekstore-img.sfo3.digitaloceanspaces.com/p/fb/fb43d8c4c61037a0f86b64354eead0719d7785ea.jpg","https://suntekstore-img.sfo3.digitaloceanspaces.com/p/1f/1f40b43a1899ad030c1f1960157cfe42e0efe3cb.jpg"],"thumbnail_link":null,"link":"https://suntekstore.com/p/DCD-10001510160/","markdown_url":"https://suntekstore.com/p/DCD-10001510160.md","json_url":"https://suntekstore.com/products/DCD-10001510160.json","buy_url":"https://suntekstore.com/buy/DCD-10001510160?qty=1","prop65_warning":null}